The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/95d6dcd5160bc4aca48df76898092f73c9b09c36

commit 95d6dcd5160bc4aca48df76898092f73c9b09c36
Author: baxley <baxley@chromium.org>
Date: Mon May 09 20:59:27 2016

Add web shell matcher for address field.

Create shared utility to verify the URL (or other text) in the
address field of the web shell.

BUG= 609622 

Review-Url: https://codereview.chromium.org/1961063002
Cr-Commit-Position: refs/heads/master@{#392420}

[add] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/testing/earl_grey/BUILD.gn
[add] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/testing/earl_grey/earl_grey_support.gyp
[add] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/testing/earl_grey/wait_util.h
[add] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/testing/earl_grey/wait_util.mm
[modify] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/web/ios_web_shell_tests.gyp
[modify] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/web/public/test/earl_grey/web_view_matchers.mm
[modify] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/web/shell/test/earl_grey/shell_matchers.h
[modify] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/web/shell/test/earl_grey/shell_matchers.mm
[modify] https://crrev.com/95d6dcd5160bc4aca48df76898092f73c9b09c36/ios/web/shell/test/web_shell_navigation_egtest.mm